thompson



(No Model.) 2 Sheets-Sheet 1. J. THOMPSON & S. B. SEGRIST.

- PLOW.

No. 385,216. Patented June 26. 1888.

Washing c,

iJ'NiTED STATES PATENT EFrcE.

JOHN THOMPSON AND SAMUEL B. SEORIST, OF BELOIT, WISCONSIN; SAID SEORISTASSIGNOR TO JOHN THOMPSON 8t SONS, (LIMITED,) OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 385,216, dated June 26,1888.

Application filed September 26, 1887. Serial No. 250,656.

To aZZ whom it may concern:

Be it known that we, J OHN THoMrsoN and SAMUEL B. SEoRrsT, of Beloit, inthe county of Rock and State of tViseonsin, have invented certain newand useful Improvements in Plows,

of which the following is a full, clear, and ex act description,reference being had to the accompanying drawings.

Our invention relates to sulky-plows, in whichthe plow is raised orlowered within the frame-work; and the object is to provide means forsecuring a colter to the plow-beam with its cutting-edge just over thepoint of the share, and so that the share may be lifted withoutobstruction to the simultaneous lifting of the colter.

To this end it consists in the construction and combinations of partsherein fully described, and pointed out definitely in the claims.

In the drawings, Figure l is a perspective View of a sulky-plow fittedwith our improvements. Fig. 2 is a top view of a portion of theplow-beam and connections between it and the eoltershank. Fig. 8 is asectional view on the line 3 3 in Fig. 2, and Fig. 4 is a detail of oneof the colter-clasps.

Referring to the parts by letter, A represents the plow-beam, and B abar connecting the two sides of the frame work, having an arch, B, nearthe center thereof.

0 represents the plowshare, which is socured to the rear end of theplow-beam A so that its point lies substantially in the same verticalplane as the arch B. This arch is provided with a wide vertical slot,1), formed by the arms I) b. The plow-beam lies in said slot and movesup and down in it as the beam is raised and lowered.

D represents a bowbrace, made, preferably, of the form shown, which isbolted to the plow-beam at such points thereon that its middle pointshall lie within the slot I).

E represents the colter, and 0 its shank by which it is connected to theplow-beam. The coltershank is secured to the beam in such a positionthat the cutting-edge of the eolter shall be just above the plow-point,in which case the colter will be directly beneath the slot 1) in thearch. This makes the plow run much easier than when the colter is placed(No model.)

The best means which we have contem- 6o plated for securing thecolter-shank e to the plow-beam is that illustrated in the drawings,wherein the front side of the bow-brace D is provided with the holes dd, one near the up per edge thereof and the other to one side and nearthe lower edge thereof.

G G represent clasps, which are provided each with a recess, which serveas sockets for the colter-shank. These clasps are provided also with theears 9 g on diagonal corners. These clasps are secured to the brace Dand to each other, with the shank c between them, by the U-shaped rod H,which passes through the holes (Z d and through holes in the ears g andthe nuts h, which screw onto the end of said rod H.

When the plow is raised from the ground, the beam A moves up in the slotbin the arch, the braceD on the one side and the side of the beam on theother acting as guides in the slot to insure the vertical movement ofthe plow and beam. The upper part of the eolter also enters the slot 1),which has been widened for its reception, because its position relativeto the plow would not permit it to enter a slot of the ordinary width tofit the plow-beam. The brace D is applied to the beam to act as a guideon one side of this widened slot, and, in this instance, also asa partof the instrumentalities through which the colter is attached to thebeam.

The coltershank is attached to the bowbrace instead of to the beamdirectly, because it permits the attachment to be made in a simple andeconomical manner, and because thereby the cutting-edge of the coltermay be secured at the proper place above the plow point without bendingthe shank e transversely. As an inferior construction the shank may bebolted directly to the beam A, with a suitable block between them tohold the colter at the proper point.

The improvements herein described maybe employed in connection withsulky-plows dif- 5 fering considerably from the precise form shown inthe drawings, and changes in details may be made Without departing fromthe spirit of the invention. We do not therefore desire to be limitedfuither than indicated by the to language of the claims.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In a sulkyplow, the combination, with I5 a widened slotted arch inthe frame-work, of

a plow-beam provided with a brace fitting within said slotted arch andguided thereby, and a colter secured to said plow-beam, and with itsbody underneath said slotted arch,

JOHN THOMPSON. SAMUEL B. SEORISI.

Witnesses:

Oscar: THOMPSON, OLAF FLACK.

